<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            width: 500px;
            height: 500px;
        }
    </style>
</head>
<body>
</body>
</html>
